Ej. Greer et al., GENERATION OF 1.2PS, 10GHZ PULSE-TRAIN FROM ALL-OPTICALLY MODELOCKED,ERBIUM FIBER RING LASER WITH ACTIVE NONLINEAR POLARIZATION ROTATION, Electronics Letters, 30(21), 1994, pp. 1764-1765
1.2ps transform-limited pulses at 10GHz have been successfully generat
ed from an all-optical. actively modelocked ring laser. The laser is a
ctively modelocked with a stream of optical pulses that produce a peri
odic phase modulation and polarisation rotation in the fibre modulator
. A polariser installed in the cavity plays an important role in conve
rting the polarisation rotation into amplitude modulation.